Added bearing to support stepper shaft, stock motor doesn't reach the assistance so you'd have to be running a 24mm shaft such as OMC 2004S or similar.
Added potentially helpful X wobble compensation, makes sense that it works to me, but call it experimental.
No heat inserts required.
BOM: To Be Completed
Basically a pair of FF695ZZ bearings, assorted M3/M4 screws and the stock tensioner assembly and belt.
The author remixed this model.
Added X wobble compensation, added bearing support for stepper motor.